Felix Zollicoffer is the right answer. the last general in the alphabet but the first to be killed in the West having got himself on the wrong side of a river.

Your turn for a question Nicwb

Not just the wrong side of a river, but the wrong side of his fortifications at the edge (and high above) that river. In BAB mainly for kicks we're including a map of the Beech Grove defenses 10 miles south of the battlefield for those who want to play a "what if?" scenario. (Plus that lets us have a scenario for the Union's late attack on the encampment.)